myopia nearsightedness
Conditions
Interventions
None listed
Sponsors
Erasmus MC, Universitair Medisch Centrum Rotterdam
Eligibility
Age
12 Years to 17 Years
Inclusion criteria
Inclusion criteria: Teenagers aged 12 to 16 years old. Written informed consent from participating teenagers and their parents/guardians.
Exclusion criteria
Exclusion criteria: Younger than the age of 12 years or older than the age of 16 years. No written informed consent from the participant or parents/guardians.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary determinant of this study is total and continuous time per day of smartphone use. Primary outcome measures are cycloplegic refractive error provided as spherical equivalent (SE) and myopia (SE worse than -0.50) yes/no. | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary determinants are reading distance, screen brightness and illuminance while using the smartphone. Secondary outcome measures are the optical components axial length, corneal curvature, corneal thickness, anterior chamber depth, and lens thickness. | — |
Countries
Netherlands
Outcome results
None listed